Please explain the following in bold in easy English.
1. He or she is frustrated by the status quo and invites change. Impulsive, ready to move about, and good at initiation, he is excitable and anxious to get the job done.
2. Find the essence of each situation, like a logger clearing a logjam. The pro climbs a tall tree and locates the key log, blows it, and lets the stream do the rest. An amateur would start at the adge of the jam and move all the logs, eventually moving the key log.